roll: third_party/pigweed: roll: rust

aarch64-apple-darwin
From git_revision:3942254d00bf95cd5920980f85ebea57a1e6ce2a
To git_revision:ad0a2b7180c06514370c4c7a7a73ee75158e88fa

aarch64-unknown-linux-gnu
From git_revision:3942254d00bf95cd5920980f85ebea57a1e6ce2a
To git_revision:ad0a2b7180c06514370c4c7a7a73ee75158e88fa

host
From git_revision:3942254d00bf95cd5920980f85ebea57a1e6ce2a
To git_revision:ad0a2b7180c06514370c4c7a7a73ee75158e88fa

x86_64-apple-darwin
From git_revision:3942254d00bf95cd5920980f85ebea57a1e6ce2a
To git_revision:ad0a2b7180c06514370c4c7a7a73ee75158e88fa

x86_64-unknown-linux-gnu
From git_revision:3942254d00bf95cd5920980f85ebea57a1e6ce2a
To git_revision:ad0a2b7180c06514370c4c7a7a73ee75158e88fa

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/227287
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 61f8b7ee89ec9e4..66d59b0e5f76b58
Roller-URL: https://ci.chromium.org/b/8740611348730064753
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Id67d4cc5319ea17046adeeb28c50f374d5e800e9
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/227288
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 61f8b7e..66d59b0 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 61f8b7ee89ec9e4ce7bdff8ea4fbca9238a44b53
+Subproject commit 66d59b0e5f76b5880ad3110bea63cc1bea304719